tuf neck-pro neck

[endoeddy]

hi all
 can anyone give me some info on tuf neck-pro neck stems,what year did the stamps change were they made by the same company, also on pro necks what year did pro neck 2 come out & were they all stamped or did any leave the factory un stamped?
many thanks guys.

[jonpaul11]

This site has been posted before and should be able to answer some of your questions:

http://martinbike.jalbum.net/Parts/Stems/index.html

[electro808]

This site has been posted before and should be able to answer some of your questions:

http://martinbike.jalbum.net/Parts/Stems/index.html

Cool Link   Some of those stems are unreal